Properties

Label 345.2.h.b
Level $345$
Weight $2$
Character orbit 345.h
Analytic conductor $2.755$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [345,2,Mod(344,345)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(345, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("345.344");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 345 = 3 \cdot 5 \cdot 23 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 345.h (of order \(2\), degree \(1\), minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(2.75483886973\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.3057647616.5
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 4x^{7} + 8x^{5} + 10x^{4} + 12x^{2} + 6 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{3} q^{2} + \beta_{2} q^{3} + ( - \beta_{6} + 1) q^{4} + ( - \beta_{4} - \beta_{3} - \beta_1) q^{5} + ( - \beta_{6} - \beta_{4} + \beta_1) q^{6} - 3 q^{7} + ( - \beta_{7} + \beta_{2}) q^{8} + (\beta_{6} + \beta_{4} + 2 \beta_1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{3} q^{2} + \beta_{2} q^{3} + ( - \beta_{6} + 1) q^{4} + ( - \beta_{4} - \beta_{3} - \beta_1) q^{5} + ( - \beta_{6} - \beta_{4} + \beta_1) q^{6} - 3 q^{7} + ( - \beta_{7} + \beta_{2}) q^{8} + (\beta_{6} + \beta_{4} + 2 \beta_1) q^{9} + ( - \beta_{6} - \beta_{5} + 3) q^{10} + ( - \beta_{7} + \beta_{3} + \beta_{2}) q^{11} + (\beta_{7} + \beta_{5} + \cdots + \beta_{2}) q^{12}+ \cdots + ( - \beta_{7} - 4 \beta_{5} + \cdots + 3 \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 8 q^{4} - 24 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 8 q^{4} - 24 q^{7} + 24 q^{10} - 16 q^{16} - 24 q^{22} + 24 q^{24} + 8 q^{25} - 24 q^{28} + 32 q^{31} + 24 q^{33} - 24 q^{36} + 48 q^{39} + 24 q^{43} + 24 q^{45} - 24 q^{46} + 16 q^{49} - 48 q^{54} - 24 q^{55} - 24 q^{57} + 24 q^{60} - 16 q^{64} + 24 q^{69} - 72 q^{70} - 24 q^{81} - 64 q^{85} + 48 q^{88} - 24 q^{90} - 24 q^{94} - 48 q^{96} - 72 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 4x^{7} + 8x^{5} + 10x^{4} + 12x^{2} + 6 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -81\nu^{7} + 725\nu^{6} - 1250\nu^{5} - 2413\nu^{4} + 3778\nu^{3} + 6007\nu^{2} + 2166\nu + 2419 ) / 3445 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -197\nu^{7} + 700\nu^{6} + 575\nu^{5} - 2211\nu^{4} - 4549\nu^{3} + 3424\nu^{2} + 3992\nu - 1347 ) / 3445 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 361\nu^{7} - 1615\nu^{6} + 765\nu^{5} + 2163\nu^{4} + 3492\nu^{3} + 703\nu^{2} + 554\nu - 4614 ) / 3445 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -368\nu^{7} + 1465\nu^{6} - 150\nu^{5} - 2329\nu^{4} - 3846\nu^{3} - 354\nu^{2} - 7512\nu - 68 ) / 3445 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -34\nu^{7} + 180\nu^{6} - 155\nu^{5} - 352\nu^{4} + 22\nu^{3} + 673\nu^{2} - 406\nu + 276 ) / 265 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 46\nu^{7} - 150\nu^{6} - 180\nu^{5} + 523\nu^{4} + 812\nu^{3} - 22\nu^{2} + 144\nu + 141 ) / 265 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 769\nu^{7} - 2715\nu^{6} - 1615\nu^{5} + 6917\nu^{4} + 9853\nu^{3} + 3492\nu^{2} + 6486\nu + 3999 ) / 3445 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{7} + \beta_{6} - \beta_{4} + \beta_{2} + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( -\beta_{7} + \beta_{6} + \beta_{5} - \beta_{4} + \beta_{3} + \beta_{2} - \beta _1 + 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( -4\beta_{7} + 3\beta_{6} + 3\beta_{5} - 5\beta_{4} + 2\beta_{3} + \beta_{2} - 3\beta _1 + 5 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -10\beta_{7} + 7\beta_{6} + 12\beta_{5} - 18\beta_{4} + 4\beta_{3} + 2\beta_{2} - 14\beta _1 + 11 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( -26\beta_{7} + 12\beta_{6} + 40\beta_{5} - 62\beta_{4} + 9\beta_{3} - 4\beta_{2} - 45\beta _1 + 23 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -60\beta_{7} + 15\beta_{6} + 128\beta_{5} - 197\beta_{4} + 8\beta_{3} - 34\beta_{2} - 144\beta _1 + 23 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( -112\beta_{7} - 32\beta_{6} + 385\beta_{5} - 591\beta_{4} - 19\beta_{3} - 168\beta_{2} - 434\beta _1 - 52 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/345\mathbb{Z}\right)^\times\).

\(n\) \(116\) \(166\) \(277\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
344.1
−1.16225 + 0.707107i
−1.16225 0.707107i
2.90421 + 0.707107i
2.90421 0.707107i
−0.172164 0.707107i
−0.172164 + 0.707107i
0.430200 0.707107i
0.430200 + 0.707107i
−2.17533 −0.796225 1.53819i 2.73205 −2.17533 0.517638i 1.73205 + 3.34607i −3.00000 −1.59245 −1.73205 + 2.44949i 4.73205 + 1.12603i
344.2 −2.17533 −0.796225 + 1.53819i 2.73205 −2.17533 + 0.517638i 1.73205 3.34607i −3.00000 −1.59245 −1.73205 2.44949i 4.73205 1.12603i
344.3 −1.12603 1.53819 0.796225i −0.732051 −1.12603 + 1.93185i −1.73205 + 0.896575i −3.00000 3.07638 1.73205 2.44949i 1.26795 2.17533i
344.4 −1.12603 1.53819 + 0.796225i −0.732051 −1.12603 1.93185i −1.73205 0.896575i −3.00000 3.07638 1.73205 + 2.44949i 1.26795 + 2.17533i
344.5 1.12603 −1.53819 0.796225i −0.732051 1.12603 1.93185i −1.73205 0.896575i −3.00000 −3.07638 1.73205 + 2.44949i 1.26795 2.17533i
344.6 1.12603 −1.53819 + 0.796225i −0.732051 1.12603 + 1.93185i −1.73205 + 0.896575i −3.00000 −3.07638 1.73205 2.44949i 1.26795 + 2.17533i
344.7 2.17533 0.796225 1.53819i 2.73205 2.17533 + 0.517638i 1.73205 3.34607i −3.00000 1.59245 −1.73205 2.44949i 4.73205 + 1.12603i
344.8 2.17533 0.796225 + 1.53819i 2.73205 2.17533 0.517638i 1.73205 + 3.34607i −3.00000 1.59245 −1.73205 + 2.44949i 4.73205 1.12603i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 344.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
115.c odd 2 1 inner
345.h even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 345.2.h.b 8
3.b odd 2 1 inner 345.2.h.b 8
5.b even 2 1 345.2.h.c yes 8
15.d odd 2 1 345.2.h.c yes 8
23.b odd 2 1 345.2.h.c yes 8
69.c even 2 1 345.2.h.c yes 8
115.c odd 2 1 inner 345.2.h.b 8
345.h even 2 1 inner 345.2.h.b 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
345.2.h.b 8 1.a even 1 1 trivial
345.2.h.b 8 3.b odd 2 1 inner
345.2.h.b 8 115.c odd 2 1 inner
345.2.h.b 8 345.h even 2 1 inner
345.2.h.c yes 8 5.b even 2 1
345.2.h.c yes 8 15.d odd 2 1
345.2.h.c yes 8 23.b odd 2 1
345.2.h.c yes 8 69.c even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(345, [\chi])\):

\( T_{2}^{4} - 6T_{2}^{2} + 6 \) Copy content Toggle raw display
\( T_{7} + 3 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} - 6 T^{2} + 6)^{2} \) Copy content Toggle raw display
$3$ \( T^{8} + 6T^{4} + 81 \) Copy content Toggle raw display
$5$ \( T^{8} - 4 T^{6} + \cdots + 625 \) Copy content Toggle raw display
$7$ \( (T + 3)^{8} \) Copy content Toggle raw display
$11$ \( (T^{4} - 18 T^{2} + 6)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 54 T^{2} + 726)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 76 T^{2} + 1369)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 18 T^{2} + 6)^{2} \) Copy content Toggle raw display
$23$ \( T^{8} + 20 T^{6} + \cdots + 279841 \) Copy content Toggle raw display
$29$ \( (T^{4} + 36 T^{2} + 81)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} - 8 T + 13)^{4} \) Copy content Toggle raw display
$37$ \( (T^{2} - 3)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} + 36 T^{2} + 81)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} - 6 T - 66)^{4} \) Copy content Toggle raw display
$47$ \( (T^{4} - 18 T^{2} + 54)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 100 T^{2} + 625)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} + 12 T^{2} + 9)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 66 T^{2} + 1014)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} - 147)^{4} \) Copy content Toggle raw display
$71$ \( (T^{4} + 36 T^{2} + 81)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 66 T^{2} + 1014)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} + 228 T^{2} + 12696)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + 172 T^{2} + 6889)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 72 T^{2} + 96)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} + 18 T + 6)^{4} \) Copy content Toggle raw display
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